vtcp connection string simplified

Till now, vtcp connection contained both port and subport.
Now the port, if not specified, defaults to 9220.
Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

src/vtcp_connecter.cpp

@@ -83,15 +83,27 @@ int zmq::vtcp_connecter_t::set_address (const char *addr_)
 {
     const char *delimiter = strrchr (addr_, '.');
     if (!delimiter) {
-        errno = EINVAL;
-        return -1;
+        delimiter = strrchr (addr_, ':');
+        if (!delimiter) {
+            errno = EINVAL;
+            return -1;
+        }
+        std::string addr_str (addr_, delimiter - addr_);
+        addr_str += ":9220";
+        std::string subport_str (delimiter + 1);
+        subport = (vtcp_subport_t) atoi (subport_str.c_str ());
+        int rc = resolve_ip_hostname (&addr, &addr_len, addr_str.c_str ());
+        if (rc != 0)
+            return -1;
+    }
+    else {
+        std::string addr_str (addr_, delimiter - addr_);
+        std::string subport_str (delimiter + 1);
+        subport = (vtcp_subport_t) atoi (subport_str.c_str ());
+        int rc = resolve_ip_hostname (&addr, &addr_len, addr_str.c_str ());
+        if (rc != 0)
+            return -1;
     }
-    std::string addr_str (addr_, delimiter - addr_);
-    std::string subport_str (delimiter + 1);
-    subport = (vtcp_subport_t) atoi (subport_str.c_str ());
-    int rc = resolve_ip_hostname (&addr, &addr_len, addr_str.c_str ());
-    if (rc != 0)
-        return -1;
 
     return 0;
 }

src/vtcp_listener.cpp

@@ -59,15 +59,19 @@ int zmq::vtcp_listener_t::set_address (const char *addr_)
     }
 
     //  Parse port and subport.
+    uint16_t port;
+    uint32_t subport;
     const char *delimiter = strrchr (addr_, '.');
     if (!delimiter) {
-        errno = EINVAL;
-        return -1;
+        port = 9220;
+        subport = (uint32_t) atoi (addr_ + 2);
+    }
+    else {
+        std::string port_str (addr_ + 2, delimiter - addr_ - 2);
+        std::string subport_str (delimiter + 1);
+        port = (uint16_t) atoi (port_str.c_str ());
+        subport = (uint32_t) atoi (subport_str.c_str ());
     }
-    std::string port_str (addr_ + 2, delimiter - addr_ - 2);
-    std::string subport_str (delimiter + 1);
-    uint16_t port = (uint16_t) atoi (port_str.c_str ());
-    uint32_t subport = (uint32_t) atoi (subport_str.c_str ());
 
     //  Start listening.
     s = vtcp_bind (port, subport);